amodule.C

Go to the documentation of this file.

#include "aattachmentpoint.h"
#include "aedit.h"
#include "amodule.h"
#include "aplugin.h"
#include "arender.h"
#include "asset.h"
#include "atrack.h"
#include "bcsignals.h"
#include "cache.h"
#include "edits.h"
#include "edl.h"
#include "edlsession.h"
#include "file.h"
#include "filexml.h"
#include "floatautos.h"
#include "language.h"
#include "module.h"
#include "patch.h"
#include "plugin.h"
#include "pluginarray.h"
#include "preferences.h"
#include "renderengine.h"
#include "mainsession.h"
#include "sharedlocation.h"
#include "theme.h"
#include "transition.h"
#include "transportque.h"
#include <string.h>



AModule::AModule(RenderEngine *renderengine, 
        CommonRender *commonrender, 
        PluginArray *plugin_array,
        Track *track)
 : Module(renderengine, commonrender, plugin_array, track)
{
        data_type = TRACK_AUDIO;
        transition_temp = 0;
        transition_temp_alloc = 0;
        level_history = 0;
        current_level = 0;
}




AModule::~AModule()
{
        if(transition_temp) delete [] transition_temp;
        if(level_history)
        {
                delete [] level_history;
                delete [] level_samples;
        }
}

AttachmentPoint* AModule::new_attachment(Plugin *plugin)
{
        return new AAttachmentPoint(renderengine, plugin);
}


void AModule::create_objects()
{
        Module::create_objects();
// Not needed in pluginarray
        if(commonrender)
        {
                level_history = new double[((ARender*)commonrender)->total_peaks];
                level_samples = new int64_t[((ARender*)commonrender)->total_peaks];
                current_level = 0;

                for(int i = 0; i < ((ARender*)commonrender)->total_peaks; i++)
                {
                        level_history[i] = 0;
                        level_samples[i] = -1;
                }
        }
}

int AModule::get_buffer_size()
{
        if(renderengine)
                return renderengine->fragment_len;
        else
                return plugin_array->get_bufsize();
}

void AModule::reverse_buffer(double *buffer, int64_t len)
{
        int start, end;
        double temp;

        for(start = 0, end = len - 1; end > start; start++, end--)
        {
                temp = buffer[start];
                buffer[start] = buffer[end];
                buffer[end] = temp;
        }
}


CICache* AModule::get_cache()
{
        if(renderengine)
                return renderengine->get_acache();
        else
                return cache;
}

int AModule::render(double *buffer, 
        int64_t input_position,
        int input_len, 
        int direction,
        int sample_rate,
        int use_nudge)
{
        int64_t edl_rate = get_edl()->session->sample_rate;
        if(use_nudge) 
                input_position += track->nudge * 
                        sample_rate /
                        edl_rate;

        AEdit *playable_edit;
        int64_t start_project = input_position;
        int64_t end_project = input_position + input_len;
        int64_t buffer_offset = 0;
        int result = 0;


// Flip range around so start_project < end_project
        if(direction == PLAY_REVERSE)
        {
                start_project -= input_len;
                end_project -= input_len;
        }

SET_TRACE

// Clear buffer
        bzero(buffer, input_len * sizeof(double));

SET_TRACE
// The EDL is normalized to the requested sample rate because the requested rate may
// be the project sample rate and a sample rate 
// might as well be directly from the source rate to the requested rate.
// Get first edit containing the range
        for(playable_edit = (AEdit*)track->edits->first; 
                playable_edit;
                playable_edit = (AEdit*)playable_edit->next)
        {
                int64_t edit_start = playable_edit->startproject;
                int64_t edit_end = playable_edit->startproject + playable_edit->length;
// Normalize to requested rate
                edit_start = edit_start * sample_rate / edl_rate;
                edit_end = edit_end * sample_rate / edl_rate;

                if(start_project < edit_end && start_project + input_len > edit_start)
                {
                        break;
                }
        }




SET_TRACE



// Fill output one fragment at a time
        while(start_project < end_project)
        {
SET_TRACE
                int64_t fragment_len = input_len;


                if(fragment_len + start_project > end_project)
                        fragment_len = end_project - start_project;

SET_TRACE
// Normalize position here since update_transition is a boolean operation.
                update_transition(start_project * 
                                edl_rate / 
                                sample_rate, 
                        PLAY_FORWARD);

SET_TRACE
                if(playable_edit)
                {
// Normalize EDL positions to requested rate
                        int64_t edit_startproject = playable_edit->startproject;
                        int64_t edit_endproject = playable_edit->startproject + playable_edit->length;
                        int64_t edit_startsource = playable_edit->startsource;
//printf("AModule::render 52 %lld\n", fragment_len);

                        edit_startproject = edit_startproject * sample_rate / edl_rate;
                        edit_endproject = edit_endproject * sample_rate / edl_rate;
                        edit_startsource = edit_startsource * sample_rate / edl_rate;
//printf("AModule::render 53 %lld\n", fragment_len);



// Trim fragment_len
                        if(fragment_len + start_project > edit_endproject)
                                fragment_len = edit_endproject - start_project;
//printf("AModule::render 56 %lld\n", fragment_len);

                        if(playable_edit->asset)
                        {
                                File *source;
                                get_cache()->age();



                                if(!(source = get_cache()->check_out(playable_edit->asset)))
                                {
// couldn't open source file / skip the edit
                                        result = 1;
                                        printf(_("VirtualAConsole::load_track Couldn't open %s.\n"), playable_edit->asset->path);
                                }
                                else
                                {
                                        int result = 0;

                                        source->set_channel(playable_edit->channel);

                                        result = source->set_audio_position(start_project - 
                                                        edit_startproject + 
                                                        edit_startsource, 
                                                sample_rate);

//                                      if(result) printf("AModule::render start_project=%d playable_edit->startproject=%d playable_edit->startsource=%d\n"
//                                              "source=%p playable_edit=%p edl=%p edlsession=%p sample_rate=%d\n",
//                                              start_project, playable_edit->startproject, playable_edit->startsource, 
//                                              source, playable_edit, get_edl(), get_edl()->session, get_edl()->session->sample_rate);
                                        source->read_samples(buffer + buffer_offset, 
                                                fragment_len,
                                                sample_rate);

                                        get_cache()->check_in(playable_edit->asset);
                                }
                        }



SET_TRACE


// Read transition into temp and render
                        AEdit *previous_edit = (AEdit*)playable_edit->previous;
                        if(transition && previous_edit)
                        {
                                int64_t transition_len = transition->length * 
                                        sample_rate / 
                                        edl_rate;
                                int64_t previous_startproject = previous_edit->startproject *
                                        sample_rate /
                                        edl_rate;
                                int64_t previous_startsource = previous_edit->startsource *
                                        sample_rate /
                                        edl_rate;

// Read into temp buffers
// Temp + master or temp + temp ? temp + master
                                if(transition_temp && transition_temp_alloc < fragment_len)
                                {
                                        delete [] transition_temp;
                                        transition_temp = 0;
                                }

                                if(!transition_temp)
                                {
                                        transition_temp = new double[fragment_len];
                                        transition_temp_alloc = fragment_len;
                                }



// Trim transition_len
                                int transition_fragment_len = fragment_len;
                                if(fragment_len + start_project > 
                                        edit_startproject + transition_len)
                                        fragment_len = edit_startproject + transition_len - start_project;
//printf("AModule::render 54 %lld\n", fragment_len);

                                if(transition_fragment_len > 0)
                                {
                                        if(previous_edit->asset)
                                        {
                                                File *source;
                                                get_cache()->age();
                                                if(!(source = get_cache()->check_out(previous_edit->asset)))
                                                {
// couldn't open source file / skip the edit
                                                        printf(_("VirtualAConsole::load_track Couldn't open %s.\n"), playable_edit->asset->path);
                                                        result = 1;
                                                }
                                                else
                                                {
                                                        int result = 0;

                                                        source->set_channel(previous_edit->channel);

                                                        result = source->set_audio_position(start_project - 
                                                                        previous_startproject + 
                                                                        previous_startsource, 
                                                                get_edl()->session->sample_rate);

//                                                      if(result) printf("AModule::render start_project=%d playable_edit->startproject=%d playable_edit->startsource=%d\n"
//                                                              "source=%p playable_edit=%p edl=%p edlsession=%p sample_rate=%d\n",
//                                                              start_project, 
//                                                              previous_edit->startproject, 
//                                                              previous_edit->startsource, 
//                                                              source, 
//                                                              playable_edit, 
//                                                              get_edl(), 
//                                                              get_edl()->session, 
//                                                              get_edl()->session->sample_rate);
                                                        source->read_samples(transition_temp, 
                                                                transition_fragment_len,
                                                                sample_rate);

                                                        get_cache()->check_in(previous_edit->asset);
                                                }
                                        }
                                        else
                                        {
                                                bzero(transition_temp, transition_fragment_len * sizeof(double));
                                        }

                                        double *output = buffer + buffer_offset;
                                        transition_server->process_transition(
                                                transition_temp,
                                                output,
                                                start_project - edit_startproject,
                                                transition_fragment_len,
                                                transition->length);
                                }
                        }
SET_TRACE

                        if(playable_edit && start_project + fragment_len >= edit_endproject)
                                playable_edit = (AEdit*)playable_edit->next;
                }

SET_TRACE
                buffer_offset += fragment_len;
                start_project += fragment_len;
        }


// Reverse buffer here so plugins always render forward.
        if(direction == PLAY_REVERSE)
                reverse_buffer(buffer, input_len);

SET_TRACE

        return result;
}

---